I like understanding how things work.

I’m a Product Manager with an engineering background. I enjoy breaking down complex problems into practical solutions. This website is where I keep the things I’ve built, the experiments I’ve tried, and the lessons I’ve learned along the way.

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WORK

Things I’ve helped ship lately.

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Commerce Catalog MigrationMigrating around 80,000 products sounded like a data problem. It wasn’t. The harder part was replacing a catalog system that had accumulated years of dependencies, behaviors, and undocumented assumptions without changing how the existing commerce experience worked for customers. Before we could safely move anything, we first had to understand what we were actually moving away from. Shipped JD Sports Indonesia Mobile AppMany people assume the hardest part of building a mobile app is the development itself. In my experience, the more difficult challenge came afterwards—making product decisions when every stakeholder brought a different perspective, and each of them had a valid reason. This project became my real lesson in building a product not only for users, but alongside people with different priorities and expectations. Maintained Commerce Integrations & Data FlowsSome of the most technically demanding product work I’ve handled has barely had a user interface. Across JD Sports Indonesia’s digital products, I’ve managed integrations connecting commerce systems with product discovery, analytics, marketing, personalization, attribution, notifications, and other internal and external services. The implementations varied—feeds, APIs, SDKs, scripts, event-driven integrations, and other data exchanges—but the recurring product problem was the same: What information needs to move between systems, when should it move, and what happens when it doesn’t? Over time, integration work became one of the biggest contributors to my technical depth as a Product Manager. Maintained

LAB

Things I’m currently poking at.

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TalaqqiAn early experiment in designing a focused space for private online Qur’an learning, inspired by watching my wife teach and study Qur’an online.

25% Built by Tegar — Personal Website & Content Management SystemA bilingual personal website and publishing system for documenting my work, experiments, writing, and the things I learn along the way.

85% Tegar Edge — Raspberry Pi IoT & Edge Vision LabA personal IoT playground built around my old Raspberry Pi 3B+. It combines MQTT-based LED control, BLE environmental monitoring, webcam streaming, and lightweight edge computer vision in an installable web dashboard.

85%

WRITING

Notes from whatever has been occupying my head lately.

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Product Management

A Few Things That Make Me Think, “This Person Is a Good PM”

After a few years of working in Product Management and watching different PMs operate up close, I started forming my own idea of what makes someone genuinely good at the role. Not from titles, frameworks, or how smart they sound in public, but from how they handle problems, requests, and the people around them.

Product Management

Maybe a Product Manager’s Job Is to Fill the Gaps

I found Product Management after spending years unsure whether I wanted to be an engineer, developer, designer, or something else entirely. A few roles and very different organizations later, my view of the PM role changed. I don’t think there’s one universal PM job description. Different organizations have different gaps, and good PMs are curious, adaptable, and fast enough to learn what they need to help fill them.

A minimalist illustration of one person casually crossing a defined public boundary while another points toward the rule and nearby people remain indifferent.

Life

Being Polite Doesn’t Make You Right

I’ve noticed a pattern in how we react to small violations in Indonesia: the person breaking the rules can somehow gain the moral high ground simply by being more polite than the person calling them out. Maybe the problem isn’t just weak enforcement. Maybe it’s also how easily we negotiate rules when the violation feels small enough.

I Think AI Is Just Another Machine

I started using AI as a student, got obsessed with generative AI in 2022, got bored, then somehow ended up vibe coding a personal website and tinkering with IoT again. Somewhere in that loop I realized I mostly treat AI the same way I treat any other machine: useful when it gets me closer to the actual goal.

ABOUT

A short intro.

Muhammad Tegar Al Firdausy

Product Builder · Product Manager · System Thinker

I didn’t start my career in product. I started in engineering, then somehow ended up working across IoT, mobility, education, and digital commerce. Product management became a good middle ground for the things I enjoy: understanding systems, solving problems, and building useful things.

Senior Assistant Manager, Digital Product (Senior Product Manager) · PT Erajaya Swasembada, Tbk.Jakarta, Indonesia

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